Fully aware I run against the grain here on TBN with this issue. First, I use only Kubota HST filters. I do not believe there is an equivalent to be found and so there will be no risky business over that one.
On the oil filter? Here's where I take a different point of view. It isn't going to cure cancer or solve world peace, but I just don't want a Kubota oil filter that is made in China. Not when I can buy a Hastings/Baldwin with great quality and made by Huskers in Nebraska. No big deal, it's just what I do.
(btw, Go Big Red)